nr_false_neg initialized as a tuple

[katel at worldpath.net]

Full_Name: Katharine Lindner
Module: prosite.py
Version: 
OS: win98
Submission from: (NULL) (209.187.114.189)


in orosite, self.nr_false_neg is initialized as the tuple ( None, None ) even
though is is an integer in the prosite file.